package com.petersoft.white;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.KeyboardFocusManager;
import java.awt.Toolkit;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Hashtable;
import java.util.Locale;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.Icon;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTree;
import javax.swing.LookAndFeel;
import javax.swing.SwingUtilities;
import javax.swing.TransferHandler;
import javax.swing.UIManager;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileSystemView;
import javax.swing.filechooser.FileView;
import javax.swing.plaf.ActionMapUIResource;
import javax.swing.plaf.UIResource;

import sun.awt.shell.ShellFolder;
import sun.swing.DefaultLookup;
import sun.swing.FilePane;
import sun.swing.SwingUtilities2;
import sun.swing.UIAction;

import com.petersoft.FilterBasicDirectoryModel;

/**
 * Basic L&F implementation of a FileChooser.
 * 
 * @version %i% %g%
 * @author Jeff Dinkins
 */
public class MyBasicFileChooserUI extends javax.swing.plaf.FileChooserUI {

	/* FileView icons */
	protected Icon directoryIcon = null;
	protected Icon fileIcon = null;
	protected Icon computerIcon = null;
	protected Icon hardDriveIcon = null;
	protected Icon floppyDriveIcon = null;

	protected Icon newFolderIcon = null;
	protected Icon upFolderIcon = null;
	protected Icon homeFolderIcon = null;
	protected Icon listViewIcon = null;
	protected Icon detailsViewIcon = null;

	protected int saveButtonMnemonic = 0;
	protected int openButtonMnemonic = 0;
	protected int cancelButtonMnemonic = 0;
	protected int updateButtonMnemonic = 0;
	protected int helpButtonMnemonic = 0;

	/**
	 * The mnemonic keycode used for the approve button when a directory is
	 * selected and the current selection mode is FILES_ONLY.
	 * 
	 * @since 1.4
	 */
	protected int directoryOpenButtonMnemonic = 0;

	protected String saveButtonText = null;
	protected String openButtonText = null;
	protected String cancelButtonText = null;
	protected String updateButtonText = null;
	protected String helpButtonText = null;

	/**
	 * The label text displayed on the approve button when a directory is
	 * selected and the current selection mode is FILES_ONLY.
	 * 
	 * @since 1.4
	 */
	protected String directoryOpenButtonText = null;

	private String openDialogTitleText = null;
	private String saveDialogTitleText = null;

	protected String saveButtonToolTipText = null;
	protected String openButtonToolTipText = null;
	protected String cancelButtonToolTipText = null;
	protected String updateButtonToolTipText = null;
	protected String helpButtonToolTipText = null;

	/**
	 * The tooltip text displayed on the approve button when a directory is
	 * selected and the current selection mode is FILES_ONLY.
	 * 
	 * @since 1.4
	 */
	protected String directoryOpenButtonToolTipText = null;

	// Some generic FileChooser functions
	private Action approveSelectionAction = new ApproveSelectionAction();
	private Action cancelSelectionAction = new CancelSelectionAction();
	private Action updateAction = new UpdateAction();
	private Action newFolderAction;
	private Action goHomeAction = new GoHomeAction();
	private Action changeToParentDirectoryAction = new ChangeToParentDirectoryAction();

	private String newFolderErrorSeparator = null;
	private String newFolderErrorText = null;
	private String fileDescriptionText = null;
	private String directoryDescriptionText = null;

	private JFileChooser filechooser = null;

	private boolean directorySelected = false;
	private File directory = null;

	private PropertyChangeListener propertyChangeListener = null;
	private AcceptAllFileFilter acceptAllFileFilter = new AcceptAllFileFilter();
	private FileFilter actualFileFilter = null;
	private GlobFilter globFilter = null;
	private FilterBasicDirectoryModel model = null;
	private BasicFileView fileView = new BasicFileView();
	private boolean usesSingleFilePane;
	private boolean readOnly;

	// The accessoryPanel is a container to place the JFileChooser accessory
	// component
	private JPanel accessoryPanel = null;
	private Handler handler;

	public MyBasicFileChooserUI(JFileChooser b) {
	}

	public void installUI(JComponent c) {
		accessoryPanel = new JPanel(new BorderLayout());
		filechooser = (JFileChooser) c;

		createModel();

		clearIconCache();

		installDefaults(filechooser);
		installComponents(filechooser);
		installListeners(filechooser);
		filechooser.applyComponentOrientation(filechooser.getComponentOrientation());
	}

	public void uninstallUI(JComponent c) {
		uninstallListeners((JFileChooser) filechooser);
		uninstallComponents((JFileChooser) filechooser);
		uninstallDefaults((JFileChooser) filechooser);

		if (accessoryPanel != null) {
			accessoryPanel.removeAll();
		}

		accessoryPanel = null;
		getFileChooser().removeAll();

		handler = null;
	}

	public void installComponents(JFileChooser fc) {
	}

	public void uninstallComponents(JFileChooser fc) {
	}

	protected void installListeners(JFileChooser fc) {
		propertyChangeListener = createPropertyChangeListener(fc);
		if (propertyChangeListener != null) {
			fc.addPropertyChangeListener(propertyChangeListener);
		}
		fc.addPropertyChangeListener(getModel());

		InputMap inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
		SwingUtilities.replaceUIInputMap(fc, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, inputMap);
		ActionMap actionMap = getActionMap();
		SwingUtilities.replaceUIActionMap(fc, actionMap);
	}

	InputMap getInputMap(int condition) {
		if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) {
			return (InputMap) DefaultLookup.get(getFileChooser(), this, "FileChooser.ancestorInputMap");
		}
		return null;
	}

	protected ActionMap getActionMap() {
		return createActionMap();
	}

	protected ActionMap createActionMap() {
		ActionMap map = new ActionMapUIResource();

		Action refreshAction = new UIAction(FilePane.ACTION_REFRESH) {
			public void actionPerformed(ActionEvent evt) {
				getFileChooser().rescanCurrentDirectory();
			}
		};

		map.put(FilePane.ACTION_APPROVE_SELECTION, getApproveSelectionAction());
		map.put(FilePane.ACTION_CANCEL, getCancelSelectionAction());
		map.put(FilePane.ACTION_REFRESH, refreshAction);
		map.put(FilePane.ACTION_CHANGE_TO_PARENT_DIRECTORY, getChangeToParentDirectoryAction());
		return map;
	}

	protected void uninstallListeners(JFileChooser fc) {
		if (propertyChangeListener != null) {
			fc.removePropertyChangeListener(propertyChangeListener);
		}
		fc.removePropertyChangeListener(getModel());
		SwingUtilities.replaceUIInputMap(fc, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null);
		SwingUtilities.replaceUIActionMap(fc, null);
	}

	protected void installDefaults(JFileChooser fc) {
		installIcons(fc);
		installStrings(fc);
		usesSingleFilePane = UIManager.getBoolean("FileChooser.usesSingleFilePane");
		readOnly = UIManager.getBoolean("FileChooser.readOnly");
		TransferHandler th = fc.getTransferHandler();
		if (th == null || th instanceof UIResource) {
			fc.setTransferHandler(defaultTransferHandler);
		}
		LookAndFeel.installProperty(fc, "opaque", Boolean.FALSE);
	}

	protected void installIcons(JFileChooser fc) {
		directoryIcon = UIManager.getIcon("FileView.directoryIcon");
		fileIcon = UIManager.getIcon("FileView.fileIcon");
		computerIcon = UIManager.getIcon("FileView.computerIcon");
		hardDriveIcon = UIManager.getIcon("FileView.hardDriveIcon");
		floppyDriveIcon = UIManager.getIcon("FileView.floppyDriveIcon");

		newFolderIcon = UIManager.getIcon("FileChooser.newFolderIcon");
		upFolderIcon = UIManager.getIcon("FileChooser.upFolderIcon");
		homeFolderIcon = UIManager.getIcon("FileChooser.homeFolderIcon");
		detailsViewIcon = UIManager.getIcon("FileChooser.detailsViewIcon");
		listViewIcon = UIManager.getIcon("FileChooser.listViewIcon");
	}

	protected void installStrings(JFileChooser fc) {

		Locale l = fc.getLocale();
		newFolderErrorText = UIManager.getString("FileChooser.newFolderErrorText", l);
		newFolderErrorSeparator = UIManager.getString("FileChooser.newFolderErrorSeparator", l);

		fileDescriptionText = UIManager.getString("FileChooser.fileDescriptionText", l);
		directoryDescriptionText = UIManager.getString("FileChooser.directoryDescriptionText", l);

		saveButtonText = UIManager.getString("FileChooser.saveButtonText", l);
		openButtonText = UIManager.getString("FileChooser.openButtonText", l);
		saveDialogTitleText = UIManager.getString("FileChooser.saveDialogTitleText", l);
		openDialogTitleText = UIManager.getString("FileChooser.openDialogTitleText", l);
		cancelButtonText = UIManager.getString("FileChooser.cancelButtonText", l);
		updateButtonText = UIManager.getString("FileChooser.updateButtonText", l);
		helpButtonText = UIManager.getString("FileChooser.helpButtonText", l);
		directoryOpenButtonText = UIManager.getString("FileChooser.directoryOpenButtonText", l);

		saveButtonMnemonic = getMnemonic("FileChooser.saveButtonMnemonic", l);
		openButtonMnemonic = getMnemonic("FileChooser.openButtonMnemonic", l);
		cancelButtonMnemonic = getMnemonic("FileChooser.cancelButtonMnemonic", l);
		updateButtonMnemonic = getMnemonic("FileChooser.updateButtonMnemonic", l);
		helpButtonMnemonic = getMnemonic("FileChooser.helpButtonMnemonic", l);
		directoryOpenButtonMnemonic = getMnemonic("FileChooser.directoryOpenButtonMnemonic", l);

		saveButtonToolTipText = UIManager.getString("FileChooser.saveButtonToolTipText", l);
		openButtonToolTipText = UIManager.getString("FileChooser.openButtonToolTipText", l);
		cancelButtonToolTipText = UIManager.getString("FileChooser.cancelButtonToolTipText", l);
		updateButtonToolTipText = UIManager.getString("FileChooser.updateButtonToolTipText", l);
		helpButtonToolTipText = UIManager.getString("FileChooser.helpButtonToolTipText", l);
		directoryOpenButtonToolTipText = UIManager.getString("FileChooser.directoryOpenButtonToolTipText", l);
	}

	protected void uninstallDefaults(JFileChooser fc) {
		uninstallIcons(fc);
		uninstallStrings(fc);
		if (fc.getTransferHandler() instanceof UIResource) {
			fc.setTransferHandler(null);
		}
	}

	protected void uninstallIcons(JFileChooser fc) {
		directoryIcon = null;
		fileIcon = null;
		computerIcon = null;
		hardDriveIcon = null;
		floppyDriveIcon = null;

		newFolderIcon = null;
		upFolderIcon = null;
		homeFolderIcon = null;
		detailsViewIcon = null;
		listViewIcon = null;
	}

	protected void uninstallStrings(JFileChooser fc) {
		saveButtonText = null;
		openButtonText = null;
		cancelButtonText = null;
		updateButtonText = null;
		helpButtonText = null;
		directoryOpenButtonText = null;

		saveButtonToolTipText = null;
		openButtonToolTipText = null;
		cancelButtonToolTipText = null;
		updateButtonToolTipText = null;
		helpButtonToolTipText = null;
		directoryOpenButtonToolTipText = null;
	}

	protected void createModel() {
		if (model != null) {
			model.invalidateFileCache();
		}
		model = new FilterBasicDirectoryModel(getFileChooser());
	}

	public FilterBasicDirectoryModel getModel() {
		return model;
	}

	public PropertyChangeListener createPropertyChangeListener(JFileChooser fc) {
		return null;
	}

	public String getFileName() {
		return null;
	}

	public String getDirectoryName() {
		return null;
	}

	public void setFileName(String filename) {
	}

	public void setDirectoryName(String dirname) {
	}

	public void rescanCurrentDirectory(JFileChooser fc) {
	}

	public void ensureFileIsVisible(JFileChooser fc, File f) {
	}

	public JFileChooser getFileChooser() {
		return filechooser;
	}

	public JPanel getAccessoryPanel() {
		return accessoryPanel;
	}

	protected JButton getApproveButton(JFileChooser fc) {
		return null;
	}

	public String getApproveButtonToolTipText(JFileChooser fc) {
		String tooltipText = fc.getApproveButtonToolTipText();
		if (tooltipText != null) {
			return tooltipText;
		}

		if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) {
			return openButtonToolTipText;
		} else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) {
			return saveButtonToolTipText;
		}
		return null;
	}

	public void clearIconCache() {
		fileView.clearIconCache();
	}

	// ********************************************
	// ************ Create Listeners **************
	// ********************************************

	private Handler getHandler() {
		if (handler == null) {
			handler = new Handler();
		}
		return handler;
	}

	protected MouseListener createDoubleClickListener(JFileChooser fc, JList list, JTree jTree) {
		return new Handler(list, jTree);
	}

	public ListSelectionListener createListSelectionListener(JFileChooser fc) {
		return getHandler();
	}

	private class Handler implements MouseListener, ListSelectionListener {
		JList list;
		JTree jTree;

		Handler() {
		}

		Handler(JList list, JTree jTree) {
			this.list = list;
			this.jTree = jTree;
		}

		public void mouseClicked(MouseEvent evt) {
			if (list != null && SwingUtilities.isLeftMouseButton(evt) && (evt.getClickCount() % 2 == 0)) {

				int index = SwingUtilities2.loc2IndexFileList(list, evt.getPoint());
				if (index >= 0) {
					File f = (File) list.getModel().getElementAt(index);
					try {
						// Strip trailing ".."
						f = ShellFolder.getNormalizedFile(f);
					} catch (IOException ex) {
						// That's ok, we'll use f as is
					}
					if (getFileChooser().isTraversable(f)) {
						list.clearSelection();
						changeDirectory(f);
					} else {
						getFileChooser().approveSelection();
					}

					// expand jTree to current directory
					FileChooserUI.expandAll(jTree, true, f);
					// end expand jTree to current directory
				}
			}
		}

		public void mouseEntered(MouseEvent evt) {
			if (list != null) {
				TransferHandler th1 = getFileChooser().getTransferHandler();
				TransferHandler th2 = list.getTransferHandler();
				if (th1 != th2) {
					list.setTransferHandler(th1);
				}
				if (getFileChooser().getDragEnabled() != list.getDragEnabled()) {
					list.setDragEnabled(getFileChooser().getDragEnabled());
				}
			}
		}

		public void mouseExited(MouseEvent evt) {
		}

		public void mousePressed(MouseEvent evt) {
		}

		public void mouseReleased(MouseEvent evt) {
		}

		public void valueChanged(ListSelectionEvent evt) {
			if (!evt.getValueIsAdjusting()) {
				JFileChooser chooser = getFileChooser();
				FileSystemView fsv = chooser.getFileSystemView();
				JList list = (JList) evt.getSource();

				int fsm = chooser.getFileSelectionMode();
				boolean useSetDirectory = usesSingleFilePane && (fsm == JFileChooser.FILES_ONLY);

				if (chooser.isMultiSelectionEnabled()) {
					File[] files = null;
					Object[] objects = list.getSelectedValues();
					if (objects != null) {
						if (objects.length == 1 && ((File) objects[0]).isDirectory() && chooser.isTraversable(((File) objects[0]))
								&& (useSetDirectory || !fsv.isFileSystem(((File) objects[0])))) {
							setDirectorySelected(true);
							setDirectory(((File) objects[0]));
						} else {
							ArrayList fList = new ArrayList(objects.length);
							for (int i = 0; i < objects.length; i++) {
								File f = (File) objects[i];
								boolean isDir = f.isDirectory();
								if ((chooser.isFileSelectionEnabled() && !isDir) || (chooser.isDirectorySelectionEnabled() && fsv.isFileSystem(f) && isDir)) {
									fList.add(f);
								}
							}
							if (fList.size() > 0) {
								files = (File[]) fList.toArray(new File[fList.size()]);
							}
							setDirectorySelected(false);
						}
					}
					chooser.setSelectedFiles(files);
				} else {
					File file = (File) list.getSelectedValue();
					if (file != null && file.isDirectory() && chooser.isTraversable(file) && (useSetDirectory || !fsv.isFileSystem(file))) {

						setDirectorySelected(true);
						setDirectory(file);
						if (usesSingleFilePane) {
							chooser.setSelectedFile(null);
						}
					} else {
						setDirectorySelected(false);
						if (file != null) {
							chooser.setSelectedFile(file);
						}
					}
				}
			}
		}
	}

	protected class DoubleClickListener extends MouseAdapter {
		// NOTE: This class exists only for backward compatability. All
		// its functionality has been moved into Handler. If you need to add
		// new functionality add it to the Handler, but make sure this
		// class calls into the Handler.
		Handler handler;

		public DoubleClickListener(JList list, JTree jTree) {
			handler = new Handler(list, jTree);
		}

		/**
		 * The JList used for representing the files is created by subclasses,
		 * but the selection is monitored in this class. The TransferHandler
		 * installed in the JFileChooser is also installed in the file list as
		 * it is used as the actual transfer source. The list is updated on a
		 * mouse enter to reflect the current data transfer state of the file
		 * chooser.
		 */
		public void mouseEntered(MouseEvent e) {
			handler.mouseEntered(e);
		}

		public void mouseClicked(MouseEvent e) {
			handler.mouseClicked(e);
		}
	}

	protected class SelectionListener implements ListSelectionListener {
		// NOTE: This class exists only for backward compatability. All
		// its functionality has been moved into Handler. If you need to add
		// new functionality add it to the Handler, but make sure this
		// class calls into the Handler.
		public void valueChanged(ListSelectionEvent e) {
			getHandler().valueChanged(e);
		}
	}

	/**
	 * Property to remember whether a directory is currently selected in the UI.
	 * 
	 * @return <code>true</code> iff a directory is currently selected.
	 * @since 1.4
	 */
	protected boolean isDirectorySelected() {
		return directorySelected;
	}

	/**
	 * Property to remember whether a directory is currently selected in the UI.
	 * This is normally called by the UI on a selection event.
	 * 
	 * @param b
	 *            iff a directory is currently selected.
	 * @since 1.4
	 */
	protected void setDirectorySelected(boolean b) {
		directorySelected = b;
	}

	/**
	 * Property to remember the directory that is currently selected in the UI.
	 * 
	 * @return the value of the <code>directory</code> property
	 * @see #setDirectory
	 * @since 1.4
	 */
	protected File getDirectory() {
		return directory;
	}

	/**
	 * Property to remember the directory that is currently selected in the UI.
	 * This is normally called by the UI on a selection event.
	 * 
	 * @param f
	 *            the <code>File</code> object representing the directory that
	 *            is currently selected
	 * @since 1.4
	 */
	protected void setDirectory(File f) {
		directory = f;
	}

	/**
	 * Returns the mnemonic for the given key.
	 */
	private int getMnemonic(String key, Locale l) {
		return SwingUtilities2.getUIDefaultsInt(key, l);
	}

	// *******************************************************
	// ************ FileChooser UI PLAF methods **************
	// *******************************************************

	/**
	 * Returns the default accept all file filter
	 */
	public FileFilter getAcceptAllFileFilter(JFileChooser fc) {
		return acceptAllFileFilter;
	}

	public FileView getFileView(JFileChooser fc) {
		return fileView;
	}

	/**
	 * Returns the title of this dialog
	 */
	public String getDialogTitle(JFileChooser fc) {
		String dialogTitle = fc.getDialogTitle();
		if (dialogTitle != null) {
			return dialogTitle;
		} else if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) {
			return openDialogTitleText;
		} else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) {
			return saveDialogTitleText;
		} else {
			return getApproveButtonText(fc);
		}
	}

	public int getApproveButtonMnemonic(JFileChooser fc) {
		int mnemonic = fc.getApproveButtonMnemonic();
		if (mnemonic > 0) {
			return mnemonic;
		} else if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) {
			return openButtonMnemonic;
		} else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) {
			return saveButtonMnemonic;
		} else {
			return mnemonic;
		}
	}

	public String getApproveButtonText(JFileChooser fc) {
		String buttonText = fc.getApproveButtonText();
		if (buttonText != null) {
			return buttonText;
		} else if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) {
			return openButtonText;
		} else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) {
			return saveButtonText;
		} else {
			return null;
		}
	}

	// *****************************
	// ***** Directory Actions *****
	// *****************************

	public Action getNewFolderAction() {
		if (newFolderAction == null) {
			newFolderAction = new NewFolderAction();
			// Note: Don't return null for readOnly, it might
			// break older apps.
			if (readOnly) {
				newFolderAction.setEnabled(false);
			}
		}
		return newFolderAction;
	}

	public Action getGoHomeAction() {
		return goHomeAction;
	}

	public Action getChangeToParentDirectoryAction() {
		return changeToParentDirectoryAction;
	}

	public Action getApproveSelectionAction() {
		return approveSelectionAction;
	}

	public Action getCancelSelectionAction() {
		return cancelSelectionAction;
	}

	public Action getUpdateAction() {
		return updateAction;
	}

	/**
	 * Creates a new folder.
	 */
	protected class NewFolderAction extends AbstractAction {
		protected NewFolderAction() {
			super(FilePane.ACTION_NEW_FOLDER);
		}

		public void actionPerformed(ActionEvent e) {
			if (readOnly) {
				return;
			}
			JFileChooser fc = getFileChooser();
			File currentDirectory = fc.getCurrentDirectory();
			File newFolder = null;
			try {
				newFolder = fc.getFileSystemView().createNewFolder(currentDirectory);
				if (fc.isMultiSelectionEnabled()) {
					fc.setSelectedFiles(new File[] { newFolder });
				} else {
					fc.setSelectedFile(newFolder);
				}
			} catch (IOException exc) {
				JOptionPane.showMessageDialog(fc, newFolderErrorText + newFolderErrorSeparator + exc, newFolderErrorText, JOptionPane.ERROR_MESSAGE);
				return;
			}

			fc.rescanCurrentDirectory();
		}
	}

	/**
	 * Acts on the "home" key event or equivalent event.
	 */
	protected class GoHomeAction extends AbstractAction {
		protected GoHomeAction() {
			super("Go Home");
		}

		public void actionPerformed(ActionEvent e) {
			JFileChooser fc = getFileChooser();
			changeDirectory(fc.getFileSystemView().getHomeDirectory());
		}
	}

	protected class ChangeToParentDirectoryAction extends AbstractAction {
		protected ChangeToParentDirectoryAction() {
			super("Go Up");
			putValue(Action.ACTION_COMMAND_KEY, FilePane.ACTION_CHANGE_TO_PARENT_DIRECTORY);
		}

		public void actionPerformed(ActionEvent e) {
			Component focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
			if (focusOwner == null || !(focusOwner instanceof javax.swing.text.JTextComponent)) {
				getFileChooser().changeToParentDirectory();
			}
		}
	}

	/**
	 * Responds to an Open or Save request
	 */
	protected class ApproveSelectionAction extends AbstractAction {
		protected ApproveSelectionAction() {
			super(FilePane.ACTION_APPROVE_SELECTION);
		}

		public void actionPerformed(ActionEvent e) {
			if (isDirectorySelected()) {
				File dir = getDirectory();
				if (dir != null) {
					try {
						// Strip trailing ".."
						dir = ShellFolder.getNormalizedFile(dir);
					} catch (IOException ex) {
						// Ok, use f as is
					}
					changeDirectory(dir);
					return;
				}
			}

			JFileChooser chooser = getFileChooser();

			String filename = getFileName();
			FileSystemView fs = chooser.getFileSystemView();
			File dir = chooser.getCurrentDirectory();

			if (filename != null) {
				// Remove whitespace from beginning and end of filename
				filename = filename.trim();
			}

			if (filename == null || filename.equals("")) {
				// no file selected, multiple selection off, therefore cancel
				// the approve action
				resetGlobFilter();
				return;
			}

			File selectedFile = null;
			File[] selectedFiles = null;

			if (filename != null && !filename.equals("")) {
				// Unix: Resolve '~' to user's home directory
				if (File.separatorChar == '/') {
					if (filename.startsWith("~/")) {
						filename = System.getProperty("user.home") + filename.substring(1);
					} else if (filename.equals("~")) {
						filename = System.getProperty("user.home");
					}
				}

				if (chooser.isMultiSelectionEnabled() && filename.startsWith("\"")) {
					ArrayList fList = new ArrayList();

					filename = filename.substring(1);
					if (filename.endsWith("\"")) {
						filename = filename.substring(0, filename.length() - 1);
					}
					File[] children = null;
					int childIndex = 0;
					do {
						String str;
						int i = filename.indexOf("\" \"");
						if (i > 0) {
							str = filename.substring(0, i);
							filename = filename.substring(i + 3);
						} else {
							str = filename;
							filename = "";
						}
						File file = fs.createFileObject(str);
						if (!file.isAbsolute()) {
							if (children == null) {
								children = fs.getFiles(dir, false);
								Arrays.sort(children);
							}
							for (int k = 0; k < children.length; k++) {
								int l = (childIndex + k) % children.length;
								if (children[l].getName().equals(str)) {
									file = children[l];
									childIndex = l + 1;
									break;
								}
							}
						}
						fList.add(file);
					} while (filename.length() > 0);
					if (fList.size() > 0) {
						selectedFiles = (File[]) fList.toArray(new File[fList.size()]);
					}
					resetGlobFilter();
				} else {
					selectedFile = fs.createFileObject(filename);
					if (!selectedFile.isAbsolute()) {
						selectedFile = fs.getChild(dir, filename);
					}
					// check for wildcard pattern
					FileFilter currentFilter = chooser.getFileFilter();
					if (!selectedFile.exists() && isGlobPattern(filename)) {
						if (globFilter == null) {
							globFilter = new GlobFilter();
						}
						try {
							globFilter.setPattern(filename);
							if (!(currentFilter instanceof GlobFilter)) {
								actualFileFilter = currentFilter;
							}
							chooser.setFileFilter(null);
							chooser.setFileFilter(globFilter);
							return;
						} catch (PatternSyntaxException pse) {
							// Not a valid glob pattern. Abandon filter.
						}
					}

					resetGlobFilter();

					// Check for directory change action
					boolean isDir = (selectedFile != null && selectedFile.isDirectory());
					boolean isTrav = (selectedFile != null && chooser.isTraversable(selectedFile));
					boolean isDirSelEnabled = chooser.isDirectorySelectionEnabled();
					boolean isFileSelEnabled = chooser.isFileSelectionEnabled();
					boolean isCtrl = (e != null && (e.getModifiers() & Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()) != 0);

					if (isDir && isTrav && (isCtrl || !isDirSelEnabled)) {
						changeDirectory(selectedFile);
						return;
					} else if ((isDir || !isFileSelEnabled) && (!isDir || !isDirSelEnabled) && (!isDirSelEnabled || selectedFile.exists())) {
						selectedFile = null;
					}
				}
			}
			if (selectedFiles != null || selectedFile != null) {
				if (selectedFiles != null || chooser.isMultiSelectionEnabled()) {
					if (selectedFiles == null) {
						selectedFiles = new File[] { selectedFile };
					}
					chooser.setSelectedFiles(selectedFiles);
					// Do it again. This is a fix for bug 4949273 to force the
					// selected value in case the ListSelectionModel clears it
					// for non-existing file names.
					chooser.setSelectedFiles(selectedFiles);
				} else {
					chooser.setSelectedFile(selectedFile);
				}
				chooser.approveSelection();
			} else {
				if (chooser.isMultiSelectionEnabled()) {
					chooser.setSelectedFiles(null);
				} else {
					chooser.setSelectedFile(null);
				}
				chooser.cancelSelection();
			}
		}
	}

	private void resetGlobFilter() {
		if (actualFileFilter != null) {
			JFileChooser chooser = getFileChooser();
			FileFilter currentFilter = chooser.getFileFilter();
			if (currentFilter != null && currentFilter.equals(globFilter)) {
				chooser.setFileFilter(actualFileFilter);
				chooser.removeChoosableFileFilter(globFilter);
			}
			actualFileFilter = null;
		}
	}

	private static boolean isGlobPattern(String filename) {
		return ((File.separatorChar == '\\' && (filename.indexOf('*') >= 0 || filename.indexOf('?') >= 0)) || (File.separatorChar == '/' && (filename.indexOf('*') >= 0
				|| filename.indexOf('?') >= 0 || filename.indexOf('[') >= 0)));
	}

	/*
	 * A file filter which accepts file patterns containing the special
	 * wildcards *? on Windows and *?[] on Unix.
	 */
	class GlobFilter extends FileFilter {
		Pattern pattern;
		String globPattern;

		public void setPattern(String globPattern) {
			char[] gPat = globPattern.toCharArray();
			char[] rPat = new char[gPat.length * 2];
			boolean isWin32 = (File.separatorChar == '\\');
			boolean inBrackets = false;
			int j = 0;

			this.globPattern = globPattern;

			if (isWin32) {
				// On windows, a pattern ending with *.* is equal to ending with
				// *
				int len = gPat.length;
				if (globPattern.endsWith("*.*")) {
					len -= 2;
				}
				for (int i = 0; i < len; i++) {
					switch (gPat[i]) {
					case '*':
						rPat[j++] = '.';
						rPat[j++] = '*';
						break;

					case '?':
						rPat[j++] = '.';
						break;

					case '\\':
						rPat[j++] = '\\';
						rPat[j++] = '\\';
						break;

					default:
						if ("+()^$.{}[]".indexOf(gPat[i]) >= 0) {
							rPat[j++] = '\\';
						}
						rPat[j++] = gPat[i];
						break;
					}
				}
			} else {
				for (int i = 0; i < gPat.length; i++) {
					switch (gPat[i]) {
					case '*':
						if (!inBrackets) {
							rPat[j++] = '.';
						}
						rPat[j++] = '*';
						break;

					case '?':
						rPat[j++] = inBrackets ? '?' : '.';
						break;

					case '[':
						inBrackets = true;
						rPat[j++] = gPat[i];

						if (i < gPat.length - 1) {
							switch (gPat[i + 1]) {
							case '!':
							case '^':
								rPat[j++] = '^';
								i++;
								break;

							case ']':
								rPat[j++] = gPat[++i];
								break;
							}
						}
						break;

					case ']':
						rPat[j++] = gPat[i];
						inBrackets = false;
						break;

					case '\\':
						if (i == 0 && gPat.length > 1 && gPat[1] == '~') {
							rPat[j++] = gPat[++i];
						} else {
							rPat[j++] = '\\';
							if (i < gPat.length - 1 && "*?[]".indexOf(gPat[i + 1]) >= 0) {
								rPat[j++] = gPat[++i];
							} else {
								rPat[j++] = '\\';
							}
						}
						break;

					default:
						// if ("+()|^$.{}<>".indexOf(gPat[i]) >= 0) {
						if (!Character.isLetterOrDigit(gPat[i])) {
							rPat[j++] = '\\';
						}
						rPat[j++] = gPat[i];
						break;
					}
				}
			}
			this.pattern = Pattern.compile(new String(rPat, 0, j), Pattern.CASE_INSENSITIVE);
		}

		public boolean accept(File f) {
			if (f == null) {
				return false;
			}
			if (f.isDirectory()) {
				return true;
			}
			return pattern.matcher(f.getName()).matches();
		}

		public String getDescription() {
			return globPattern;
		}
	}

	/**
	 * Responds to a cancel request.
	 */
	protected class CancelSelectionAction extends AbstractAction {
		public void actionPerformed(ActionEvent e) {
			getFileChooser().cancelSelection();
		}
	}

	/**
	 * Rescans the files in the current directory
	 */
	protected class UpdateAction extends AbstractAction {
		public void actionPerformed(ActionEvent e) {
			JFileChooser fc = getFileChooser();
			fc.setCurrentDirectory(fc.getFileSystemView().createFileObject(getDirectoryName()));
			fc.rescanCurrentDirectory();
		}
	}

	private void changeDirectory(File dir) {
		JFileChooser fc = getFileChooser();
		// Traverse shortcuts on Windows

		if (dir != null /*&& FilePane.usesShellFolder(fc)*/) {
			try {
				ShellFolder shellFolder = ShellFolder.getShellFolder(dir);
				if (shellFolder.isLink()) {
					File linkedTo = shellFolder.getLinkLocation();
					if (linkedTo != null && fc.isTraversable(linkedTo)) {
						dir = linkedTo;
					} else {
						return;
					}
				}
			} catch (FileNotFoundException ex) {
				return;
			}
		}
		fc.setCurrentDirectory(dir);
		if (fc.getFileSelectionMode() == JFileChooser.FILES_AND_DIRECTORIES && fc.getFileSystemView().isFileSystem(dir)) {

			setFileName(dir.getAbsolutePath());
		}
	}

	// *****************************************
	// ***** default AcceptAll file filter *****
	// *****************************************
	protected class AcceptAllFileFilter extends FileFilter {

		public AcceptAllFileFilter() {
		}

		public boolean accept(File f) {
			return true;
		}

		public String getDescription() {
			return UIManager.getString("FileChooser.acceptAllFileFilterText");
		}
	}

	// ***********************
	// * FileView operations *
	// ***********************
	protected class BasicFileView extends FileView {
		/* FileView type descriptions */
		// PENDING(jeff) - pass in the icon cache size
		protected Hashtable<File, Icon> iconCache = new Hashtable<File, Icon>();

		public BasicFileView() {
		}

		public void clearIconCache() {
			iconCache = new Hashtable<File, Icon>();
		}

		public String getName(File f) {
			// Note: Returns display name rather than file name
			String fileName = null;
			if (f != null) {
				fileName = getFileChooser().getFileSystemView().getSystemDisplayName(f);
			}
			return fileName;
		}

		public String getDescription(File f) {
			return f.getName();
		}

		public String getTypeDescription(File f) {
			String type = getFileChooser().getFileSystemView().getSystemTypeDescription(f);
			if (type == null) {
				if (f.isDirectory()) {
					type = directoryDescriptionText;
				} else {
					type = fileDescriptionText;
				}
			}
			return type;
		}

		public Icon getCachedIcon(File f) {
			return (Icon) iconCache.get(f);
		}

		public void cacheIcon(File f, Icon i) {
			if (f == null || i == null) {
				return;
			}
			iconCache.put(f, i);
		}

		public Icon getIcon(File f) {
			Icon icon = getCachedIcon(f);
			if (icon != null) {
				return icon;
			}
			icon = fileIcon;
			if (f != null) {
				FileSystemView fsv = getFileChooser().getFileSystemView();

				if (fsv.isFloppyDrive(f)) {
					icon = floppyDriveIcon;
				} else if (fsv.isDrive(f)) {
					icon = hardDriveIcon;
				} else if (fsv.isComputerNode(f)) {
					icon = computerIcon;
				} else if (f.isDirectory()) {
					icon = directoryIcon;
				}
			}
			cacheIcon(f, icon);
			return icon;
		}

		public Boolean isHidden(File f) {
			String name = f.getName();
			if (name != null && name.charAt(0) == '.') {
				return Boolean.TRUE;
			} else {
				return Boolean.FALSE;
			}
		}
	}

	private static final TransferHandler defaultTransferHandler = new FileTransferHandler();

	/**
	 * Data transfer support for the file chooser. Since files are currently
	 * presented as a list, the list support is reused with the added flavor of
	 * DataFlavor.javaFileListFlavor
	 */
	static class FileTransferHandler extends TransferHandler implements UIResource {

		/**
		 * Create a Transferable to use as the source for a data transfer.
		 * 
		 * @param c
		 *            The component holding the data to be transfered. This
		 *            argument is provided to enable sharing of TransferHandlers
		 *            by multiple components.
		 * @return The representation of the data to be transfered.
		 * 
		 */
		protected Transferable createTransferable(JComponent c) {
			Object[] values = null;
			if (c instanceof JList) {
				values = ((JList) c).getSelectedValues();
			} else if (c instanceof JTable) {
				JTable table = (JTable) c;
				int[] rows = table.getSelectedRows();
				if (rows != null) {
					values = new Object[rows.length];
					for (int i = 0; i < rows.length; i++) {
						values[i] = table.getValueAt(rows[i], 0);
					}
				}
			}
			if (values == null || values.length == 0) {
				return null;
			}

			StringBuffer plainBuf = new StringBuffer();
			StringBuffer htmlBuf = new StringBuffer();

			htmlBuf.append("<html>\n<body>\n<ul>\n");

			for (int i = 0; i < values.length; i++) {
				Object obj = values[i];
				String val = ((obj == null) ? "" : obj.toString());
				plainBuf.append(val + "\n");
				htmlBuf.append("  <li>" + val + "\n");
			}

			// remove the last newline
			plainBuf.deleteCharAt(plainBuf.length() - 1);
			htmlBuf.append("</ul>\n</body>\n</html>");

			return new FileTransferable(plainBuf.toString(), htmlBuf.toString(), values);
		}

		public int getSourceActions(JComponent c) {
			return COPY;
		}

		static class FileTransferable extends BasicTransferable {

			Object[] fileData;

			FileTransferable(String plainData, String htmlData, Object[] fileData) {
				super(plainData, htmlData);
				this.fileData = fileData;
			}

			/**
			 * Best format of the file chooser is DataFlavor.javaFileListFlavor.
			 */
			protected DataFlavor[] getRicherFlavors() {
				DataFlavor[] flavors = new DataFlavor[1];
				flavors[0] = DataFlavor.javaFileListFlavor;
				return flavors;
			}

			/**
			 * The only richer format supported is the file list flavor
			 */
			protected Object getRicherData(DataFlavor flavor) {
				if (DataFlavor.javaFileListFlavor.equals(flavor)) {
					ArrayList files = new ArrayList();
					for (int i = 0; i < fileData.length; i++) {
						files.add(fileData[i]);
					}
					return files;
				}
				return null;
			}

		}
	}
}
